How can we track time in days instead of hours in QuickBooks using a ProAdvisor license?

Tracking the time of days in PTO isn't possible in QuickBooks Online (QBO), Pallavi. I've got a workaround for you. 

Instead of tracking to specific days, you can calculate the total actual working hours per day for your employees. Here's how to record them in QBO: 

1. Go to Payroll, then Employees.
2. Select your employee.
3. From Pay types, select Start or Edit.
4. Scroll down to the Time Off Policies section. Select Add new [time off pay] policy from the dropdown ▼ menu to add a policy for Paid time off. 
5. Complete the on-screen fields to create your policy, then select Save.

Moreover, you might want to consider checking this article about how location tracking is used and how it works: Set up and use location tracking in QBO. 

If you need further assistance with managing your employees, I'll be in the comment to circle you back. Have a good one.